Alright, let's work through 82920611 times 81343371 step by step
82920611 × 81343371 = 81343371 × (82920611)
+ 81343371 × 1 giving us 81343371
+ 81343371 × 10 yielding 813433710
+ 81343371 × 600 yielding 48806022600
+ 81343371 × 0000 that results in 0
+ 81343371 × 20000 yielding 1626867420000
+ 81343371 × 900000 giving us 73209033900000
+ 81343371 × 2000000 that results in 162686742000000
+ 81343371 × 80000000 that equals 6507469680000000

= 6745042024119681
